Senior Backend Engineer (Architecture & Maintenance)
Location: DE, BE, Berlin
Department: Engineering
Employment type: Full-time
Required experience: Associate
Required education: Master's Degree
Industry: E-Learning
Function: Engineering

Company profile:
Babbel enables anyone to learn languages in an easy and interactive way. The learning system offers 13 languages, from English to Indonesian. Users with and without previous knowledge can access grammar and thematic courses as well as vocabulary, writing and listening comprehension exercises online and on the go. In addition to the full courses for web, iOS and Android, there are also vocabulary trainer apps for Windows 8 and the Kindle Fire.Babbel is operated by Lesson Nine GmbH in Berlin. The company was founded in August 2007 and now has approximately 250 employees and freelancers and is opening an office in New York City (Lower East Side).

Job description:
We are looking for a full-time Backend Engineer (Ruby on Rails) to start immediately in our office in Berlin-Kreuzberg, Germany.With millions of regular users and more than 7000 hours of premium content, #URL_8e4e9897aecb1980ec96e296864343a4402263bc440bec39377381446da44dc8# is growing fast while we are shaping the future of learning.Our flexible cloud-based backend infrastructure consists of multiple high-performance rails services serving more than 20.000 requests per minute to users worldwide via different clients (Android, iOS, Web).You are an experienced backend developer that loves to solve challenging technical problems working together with ambitious collegues in a fast-paced environment.Your mission will be to shape the architecture of our platform and to enhance its capabilities while keeping a close focus on maintainability and performance and to work actively on reducing technical debt - partly by influencing teams but also taking over larger architecture implementation tasks as well as refactorings yourself.In this respect, you will work directly with our lead architect in the architecture team as well as in cross-functional scrum teams to achieve these goals.ResponsibilitiesHelp to drive the technical architecture evolution with our lead architect (influence teams, but also code hands-on yourself)Envision and architect new future proof services for our new learning platformMaintain and evolve existing services - including refactoring and reduction of technical debtIdentify and implement innovative solutions and ensure long-term stability and maintainability of our code baseEnsure code quality and participate in code reviews

Requirements:
5+ years experience in software developmentVery good knowledge in Ruby on Rails development, at least 3+ years experienceProven experience in at least one other server-side framework (e.g. using #URL_a58bd7bd48420a1f4774598bc5f1451bdcc79baee91a357c1d69e8aede501d73#, Erlang)Proven experience in at least one client-side framework (single-page web application framework, e.g. AngularJS or #URL_5eeeab414a831563b0294f53edd871b2bc8fc7000cab17e6b33cf60192cdbc14#; or mobile development for iOS or Android)Software development talent proven by great work results/experience, hobby projects or open source contributionPassion for building scalable distributed architectures and services using proven software design techniquesCan do attitude, great team playerExperience in using cloud services, ideally AWSExperience with migration of data to NoSQL databasesExperience in architecting solutions and agreeing them with stakeholders as well as driving architectural decisionsExperience in refactoring and methodologies of managing and driving down technical debtExperience in testing frameworks and automated regression testsOPTIONAL: understanding of lean and agile practices, in particular Scrum and Kanban

Benefits:
Tackle high volume,  scaleable problems with a cloud-based setup and latest cutting-edge technologies The potential to change the way of learning for millions of users worldwideResponsibility from day one and professional and personal growthPotential within a fast growing teamParticipate in hackdays, technology brown-bagsA lively startup atmosphere with friendly working hoursLong-term prospectsA vibrant international team from over 20 different nationalitiesExcellent working conditions with a location in the heart of the Berlin sceneGreat company benefits (High-End company bike, fresh fruits &amp; drinks, Hackathons etc.)Check out our jobs page, our blog, and our techblog to get an impression of how we work at Babbel !